6566145480 has 48 divisors (see below), whose sum is σ = 21339973980. Its totient is φ = 1750972032.

The previous prime is 6566145473. The next prime is 6566145493. The reversal of 6566145480 is 845416656.

6566145480 is a `hidden beast` number, since 6 + 566 + 1 + 4 + 5 + 4 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5523759684 + 1042385796 = 74322^2 + 32286^2 .

It is a super-2 number, since 2×6566145480² = 86228532929048860800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9119287 + ... + 9120006.

Almost surely, 2^6566145480 is an apocalyptic number.

6566145480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6566145480 is an abundant number, since it is smaller than the sum of its proper divisors (14773828500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6566145480 is a wasteful number, since it uses less digits than its factorization.

6566145480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18239310 (or 18239303 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 6566145480 is about 81031.7559972632. The cubic root of 6566145480 is about 1872.5647060860.

The spelling of 6566145480 in words is "six billion, five hundred sixty-six million, one hundred forty-five thousand, four hundred eighty".